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C Academy · Lesson

Introduction to File Handling

Learn about file pointers and how to open, read, write, and close files using fopen, fclose, fprintf, and fscanf.

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Introduction to File Handling

File handling allows programs to store and retrieve data persistently by reading from and writing to files.

In this lesson, you will learn:

  • How to open and close files in C.
  • How to read and write data using file handling functions.
  • The importance of file operations in real-world applications.
Introduction to File Handling — illustration 1

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Opening a File

Files in C are opened using the fopen() function.

Syntax:

FILE *filePtr = fopen("filename.txt", "mode");

Modes:

  • r - Read
  • w - Write
  • a - Append

All lessons in this course

  1. Introduction to File Handling
  2. Working with Binary Files
  3. File Error Handling
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